16 search results - page 2 / 4 » Additive Spanners for k-Chordal Graphs |
FOCS
2006
IEEE
13 years 11 months ago
2006
IEEE
An additive spanner of an unweighted undirected graph G with distortion d is a subgraph H such that for any two vertices u, v ∈ G, we have δH(u, v) ≤ δG(u, v) + d. For every...
ICALP
2007
Springer
13 years 11 months ago
2007
Springer
A spanner of an undirected unweighted graph is a subgraph that approximates the distance metric of the original graph with some specified accuracy. Specifically, we say H ⊆ G i...
SWAT
2004
Springer
13 years 10 months ago
2004
Springer
In this paper we introduce a new notion of collective tree spanners. We say that a graph G = (V, E) admits a system of µ collective additive tree r-spanners if there is a system T...
WADS
2007
Springer
13 years 11 months ago
2007
Springer
A ball graph is an intersection graph of a set of balls with arbitrary radii. Given a real number t > 1, we say that a subgraph G′ of a graph G is a t-spanner of G, if for eve...
WADS
2007
Springer
13 years 11 months ago
2007
Springer
Distance oracles and graph spanners are excerpts of a graph that allow to compute approximate shortest paths. Here, we consider the situation where it is possible to access the ori...